What is differential equation of first order? 1 A first order differential equation is an equation of the form F(t,y,˙y)=0. A solution of a first order differential equation is a function f(t) that makes F(t,f(t),f′(t))=0 for every value of t. 2 The equation from Newton’s law of cooling, ˙y=k(M−y) is a first order differential equation; […]
Is a mistake in the design of an experiment that makes a particular result more likely?
Is a mistake in the design of an experiment that makes a particular result more likely? Bias is any systematic error that makes a particular experimental outcome more or less likely. Errors can happen in any experiment: people make mistakes in measurement, instruments fail, computer glitches can alter data. What is the series of steps […]
Can a stressful fight cause a miscarriage?
Can a stressful fight cause a miscarriage? June 5, 2003 — Stress has long been suspected as a possible cause of miscarriage, with several studies indicating an increased risk among women reporting high levels of emotional or physical turmoil in their early months of pregnancy or just before conception. Which trimester is most important? The […]
What is the most basic building block?
What is the most basic building block? Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles. Every atom contains a central core called the nucleus, made of particles called protons and neutrons. […]
How do you tell if a vector is a unit vector?
What is the difference between the driving frequency and the natural frequency of an oscillator?
What is the difference between the driving frequency and the natural frequency of an oscillator? When the oscillating system starts oscillating on its own at a frequency , then this frequency is called natural frequency. But a system oscillating due to external excitation with a frequency , then this frequency is called driving frequency. What […]
When chlorine is added to water what happens?
When chlorine is added to water what happens? How does chlorine disinfection work? Chlorine kills pathogens such as bacteria and viruses by breaking the chemical bonds in their molecules. Disinfectants that are used for this purpose consist of chlorine compounds which can exchange atoms with other compounds, such as enzymes in bacteria and other cells. […]
What is the largest biome on Earth?
What is the largest biome on Earth? Taiga How are biomes linked to climate? Since climate determines the type of vegetation that grows in an area, vegetation is used as an indicator of climate type. A climate type and its plants and animals make up a biome. The organisms of a biome share certain characteristics […]
Why is there more oxygen in the atmosphere now?
Why is there more oxygen in the atmosphere now? Oxygen levels are generally thought to have increased dramatically about 2.3 billion years ago. Photosynthesis by ancient bacteria may have produced oxygen before this time. In addition, early plants and algae began to release oxygen at a faster rate. … What would happen if there was […]
What is the difference between methylated spirit and ethanol?
What is the difference between methylated spirit and ethanol? Also known as denatured alcohol, methylated spirits is for the most part just plain alcohol (ethyl alcohol). The difference between the two alcohols is ethanol is made from grains, fruits and vegetables and methanol usually from wood stock. WARNING: Do not attempt to drink methylated spirits. […]